According to the World Health Organization, this is now the largest Ebola outbreak in history. It is believed to have killed nearly 700 people in Guinea, Liberia and Sierra Leone since February.

Dr. Michael Zimring, director of travel medicine for Mercy Medical Center, specializes in preparing people to travel to developing countries around the world based on their medical history. Zimring said it's important to know the facts on Ebola "because it's happening and they don't know exactly why."

"It has a fatality rate in undeveloped countries of up to 90 percent. It's mostly found in remote villages in central and western Africa. It's first transmitted from animals to humans, then human to human through bodily fluids, and those that become severely ill need intensive care," Zimring said.

As far as symptoms, when it's at its worst, Zimring said "your capillaries in your body leak, you get hypotensive, you go into shock, you have multiple organ failure -- like kidneys and liver -- and your immune system is shot."

More symptoms include fever, headache, muscle pain, sore throat, vomiting, diarrhea and liver and kidney problems. It can also take up to 21 days to show itself.

Zimring said there is a slim chance Ebola could make its way to the U.S. He said with medical procedures that are in place, it would have a hard time spreading.

"You're on a plane. You come in contact with somebody with it, and you don't know. A disease is hours away anywhere in the world, so we just have to be very vigilant and be careful," Zimring said.

He said the outbreak should also serve as a reminder for people who need to travel to that part of the world to get travel insurance. He said if someone with travel insurance gets sick, it gets them out quickly so they save money and perhaps their life, too.

"It may cost $3 or $4 a day as a premium, but coming back from these areas like west Africa, you are talking between $50,000 and $100,000 a trip on an air ambulance. So, if you have this insurance, you are protected," Zimring said.

TREATMENT. HE HAS PASSED AWAY. HE WAS A HOWARD HIGH SCHOOL GRADUATE. THE EBOLA OUTBREAK CONTINUES AND QUESTIONS HAVE STARTED TO RISE ABOUT WHAT PRECAUTIONS THE U.S. SHOULD TAKE. AND SOME LOCAL DOCTORS FEEL WE NEED TO BE VIGILANT. 11 NEWS REPORTER LOWELL MELSER JOINS US LIVE FROM THE NEWSROOM MORE ON THIS. LOWELL? IT IS BELIEVED TO HAVE KILLED MORE THAN 700 PEOPLE SINCE FEBRUARY. WHILE OTHER NATIONS AROUND THE WORLD AROUND THING UP SAFETY MEASURES, SHOULD WE BE DOING THE SAME HERE IN THE U.S.? AS THE WORLD WATCHES THE WORST EBOLA OUTBREAK IN HISTORY PLAY OUT IN WEST AFRICA, THERE ARE QUESTIONS -- HOW DO YOU GET IT, COULD WE SEE IT HERE IN THE UNITED STATES? AND WHY IS THERE SO MUCH CONCERN? BECAUSE IT IS HAPPENING AND THEY DO NOT KNOW EXACTLY WHY. DR. MICHAEL ZIMMER AND IS THE DIRECTOR OF TRAVEL MEDICINE FOR MERCY HOSPITALS AND SPECIALIZES IN PREPARING PEOPLE TO TRAVEL AROUND THE WORLD BASED ON THEIR MEDICAL HISTORY. HE SAYS IT IS IMPORTANT TO KNOW THE FACTS ON EBOLA. IT HAS A MORTALITY RATE OF 90%. IT IS TRANSMITTED FROM ANIMALS TO HUMANS AND THEN HUMAN TO HUMAN THROUGH BODILY FLUIDS AND THOSE WHO BECOME SEVERELY ILL NEED INTENSIVE CARE. AS FAR AS SYMPTOMS, WHEN IT IS AT ITS WORST -- YOU GO HYPERTENSIVE. YOU GO INTO SHOCK. YOU HAVE MULTIPLE ORGAN FAILURE, LIKE THE KIDNEYS IN THE LIVER. YOUR IMMUNE SYSTEM IS SHOT. YOU SHOULD LOOK OUT FOR FEVER, HEADACHE, VOMITING, DIARRHEA, LIVER, AND KIDNEY PROBLEMS OR IT ALSO IT CAN TAKE UP TO 21 DAYS TO SHOW ITSELF. FOR THOSE OF US IN THE U.S., DR. ZIMMERING SAYS THERE IS A SLIM CHANCE EBOLA CAN MAKE ITS WAY HERE, BUT IT WOULD HAVE A HARD TIME SPREADING. YOU CONTACT SOMEBODY WITH IT YOU DO NOT KNOW -- A DISEASE IS HOURS AWAY ANYWHERE IN THE WORLD. WE JUST HAVE TO BE VERY VIGILANT AND CAREFUL. THE DOCTOR SAYS THE OUTBREAK SHOULD SERVE AS A REMINDER FOR THOSE WHO NEED TO TRAVEL TO THAT PART OF THE WORLD TO GET TRAVEL INSURANCE. SHOULD YOU GET SICK, YOU CAN GET OUT OF THAT COUNTRY RATHER QUICKLY. NOT ONLY DO YOU SAVE MONEY, BUT

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